Albin warth and henry waeth



A. 86 H, WARTH. Machine for Cutting Textile and other Fabrics.

Patented Mar.2,1sso.

"mliwwnoa W/ZW 7% MFEIERS. Pl-lomLmicekAPnzn, WASHINGTON, D C

M UNITED STATES PATENT OFFICE.

ALBIN WARTH AND HENRY WARTH, OF STAPLETON, NEW YORK.

MACHINE FOR CUTTING TEXTILE AND )THER FABRICS.

SPECIFICATION forming-part of Letters Patent No. 225,031, dated March 2, 1880.

Application filed November 13, 1879.

To all whom it may concern Be it known that we, ALBIN WARTH and HENRY WARTH, both of Stapleton, in the county of Richmond and State of New York, have invented a new and useful Improvement in Machines for Cutting Textile and other Fabrics, which invention is fully set forth in the following specification, reference being bad to the accompanying drawings, in which-- Figure 1 represents a side view, partly in section, of our machine. Fig. 2 is a horizontal section in the line m, Fig. 1. 'Fig. 3 is a similar section in the line y y, Fig. 1. Fig. 4 shows a portion of the standard.

Similar letters indicate corresponding parts.

This invention relates to that class of machines described in Letters Patent of the United States issued to Albin Warth, May

' 26, 1874, No. 151,456, and July 13, 1875,.N0.

165,636; and it consists in certain novel coinbinations of parts hereinafter fully described, and pointed out in the claims.

In the drawings, the letter A designates a foot-plate carrying the cutting mechanism. This plate is provided with a gravitating toe, B, which catches beneath the material to be cut and conducts the same up on the footplate, where it is cut. When the machine is worked rapidly the toe B is liable to jump' on the work-table and produce a disagreeable noise; and to overcome this objection we combine with the toe a spring, b, which acts on the toe to force the same away from the footplate. In other words, the spring 12 forms an elastic bearing for the toe B, and it is obvious that the latter is thereby steadied or prevented from jumping in the operation of the machine. In this example the spring bis attached to the toe B, but it may, if desired, be attached to the foot-plate.

The letter O designates the standard of the machine rising from the footplate A, and havheretofore flush with each other on the open edge of the groove, and hence an abrupt wide or thick edge was presented to the cut of the cloth by the standard. In order to reduce this edge--namely, the open edge of the knifegroove cwe cut off a portion of the standard k on one side of the knife-groove, so that one side of the groove is in advance of the other, as shown in Fig. 2. It follows that the two sides of the knife-groove 0 enter the out of the cloth one after the other, and since the standard 0 thus obtains a tapered or graduated edge its entrance into the cut of the cloth is materially facilitated.

the cutting mechanism when the machine is in operation.

By the momentum referred to the foot-plate A'is liable to jump or vibrate on the worktable, particularly when themachine is worked rapidly, which makes it difficult for the operator to follow the lines of the pattern marked on the cloth to be cut. \Vithout the balanceweight I it is impracticable to exceed twelve hundred revolutions per minute of the disk E, whereas by its use the revolutions of the disk can be increased to a large extent without danger of vibrating the foot-plate.

The letter J designates the presser-slide, which is arranged in the appropriate groove of the standard, and is in juxtaposition to the knife-slide H. Heretofore a pressure screw was used to clamp the presser-slide J, and owing to the contiguity thereto of the knifeslide H the latter was liable to be crowded in its groove, which obviously interfered with the successful operation of the machine. To overcome this objection we make use of a clamp, L, which acts on the presser-slide J by traction, and in this example the clamp is composed of an eyebolt, g, embracing the presserslide, and of a thumb-nut, h, fitted on the shank of the eyebolt, this shank being screwthreaded.- The shank of the eyebolt g passes through a support, N, consisting of a lug secured to the machine-frame, and on the face of this support, surrounding the shank of the eyebolt, is arranged an elastic bearing, 4,, for the thumb-nut It. When the thumb-nut h is tightened the eyeboltg is drawn toward it, thereby clamping the pressure-slide J, while at the same time the nut becomes wedged on the elastic pad or bearing 1', whereby it is prevented i'rom working loose. It follows that the presser-slide J is firmly held in the position to which it may be adjusted.

What we claim as new, and desire to secure by Letters Patent, is

1'. The combination, with the foot-plate and its gravitating toe, of a spring which acts on the toe so as to prevent the same from jumpingin the rapid operation of the machine, substantially as shown and described.

2. In combination with the foot-plate and cutting knife, a standard having a knifegroove which is open on one ed ge, and one side of which extends in advance of the other, thereby facilitating the entrance of said. standard into the cut of the cloth, substantially as shown and described. i

3. In combination with the cutting mechanism and foot-plate, a revolving disk, which carries an eccentric wrist-pin connecting with the cutting mechanism, and also carries a balance-Weight at a point opposite the wrist-pin, to overcome the momentum of the cutting mechanism, and thereby prevent vibrations of the footplate, substantially as shown and described.

4. In combination with the standard and. the presser-slide, a traction-clamp for holding the prcsser-slide, consisting of an eyebolt em- 

